11632861 has 2 divisors, whose sum is σ = 11632862. Its totient is φ = 11632860.

The previous prime is 11632849. The next prime is 11632909. The reversal of 11632861 is 16823611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11628100 + 4761 = 3410^2 + 69^2 .

It is a cyclic number.

It is not a de Polignac number, because 11632861 - 2²³ = 3244253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11132861) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5816430 + 5816431.

It is an arithmetic number, because the mean of its divisors is an integer number (5816431).

Almost surely, 2^11632861 is an apocalyptic number.

It is an amenable number.

11632861 is a deficient number, since it is larger than the sum of its proper divisors (1).

11632861 is an equidigital number, since it uses as much as digits as its factorization.

11632861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 11632861 is about 3410.6980223995. The cubic root of 11632861 is about 226.5837949164.

The spelling of 11632861 in words is "eleven million, six hundred thirty-two thousand, eight hundred sixty-one".